Examples with SubqueryState org.teiid.query.processor.relational.SubqueryAwareEvaluator.SubqueryState used on opensource projects

Example 1 with SubqueryState

use of org.teiid.query.processor.relational.SubqueryAwareEvaluator.SubqueryState in project teiid by teiid.

the class AccessNode method openInternal.

private void openInternal() throws TeiidComponentException, TeiidProcessingException {
    // TODO: support a partitioning concept with multi-source and full dependent join pushdown
    if (subPlans != null) {
        if (this.evaluatedPlans == null) {
            this.evaluatedPlans = new HashMap<GroupSymbol, SubqueryState>();
            for (Map.Entry<GroupSymbol, RelationalPlan> entry : subPlans.entrySet()) {
                SubqueryState state = new SubqueryState();
                RelationalPlan value = entry.getValue();
                value.reset();
                state.processor = new QueryProcessor(value, getContext().clone(), getBufferManager(), getDataManager());
                state.collector = state.processor.createBatchCollector();
                this.evaluatedPlans.put(entry.getKey(), state);
            }
        }
        BlockedException be = null;
        for (SubqueryState state : evaluatedPlans.values()) {
            try {
                state.collector.collectTuples();
            } catch (BlockedException e) {
                be = e;
            }
        }
        if (be != null) {
            throw be;
        }
    }
    /*
		 * Check to see if we need a multi-source expansion.  If the connectorBindingExpression != null, then 
		 * the logic below will handle that case
		 */
    if (multiSource && connectorBindingExpression == null) {
        synchronized (this) {
            // the description can be obtained asynchly, so we need to synchronize
            VDBMetaData vdb = getContext().getVdb();
            ModelMetaData model = vdb.getModel(getModelName());
            List<String> sources = model.getSourceNames();
            // make sure that we have the right nodes
            if (this.getChildCount() != 0 && (this.sourceNames == null || !this.sourceNames.equals(sources))) {
                this.childCount--;
                this.getChildren()[0] = null;
            }
            if (this.getChildCount() == 0) {
                sourceNames = sources;
                RelationalNode node = multiSourceModify(this, connectorBindingExpression, getContext().getMetadata(), sourceNames);
                RelationalPlan.connectExternal(node, getContext(), getDataManager(), getBufferManager());
                this.addChild(node);
            }
        }
        this.getChildren()[0].open();
        return;
    }
    // Copy command and resolve references if necessary
    if (processingCommand == null) {
        processingCommand = command;
        isUpdate = RelationalNodeUtil.isUpdate(command);
    }
    boolean needProcessing = true;
    if (this.connectorBindingExpression != null && connectorBindingId == null) {
        this.connectorBindingId = (String) getEvaluator(Collections.emptyMap()).evaluate(this.connectorBindingExpression, null);
        VDBMetaData vdb = getContext().getVdb();
        ModelMetaData model = vdb.getModel(getModelName());
        List<String> sources = model.getSourceNames();
        String replacement = this.connectorBindingId;
        if (!sources.contains(this.connectorBindingId)) {
            shouldExecute = false;
            if (command instanceof StoredProcedure) {
                StoredProcedure sp = (StoredProcedure) command;
                if (sp.returnParameters() && sp.getProjectedSymbols().size() > sp.getResultSetColumns().size()) {
                    throw new TeiidProcessingException(QueryPlugin.Event.TEIID30561, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30561, command));
                }
            }
            return;
        }
        if (!(command instanceof StoredProcedure || command instanceof Insert)) {
            processingCommand = (Command) command.clone();
            MultiSourceElementReplacementVisitor.visit(replacement, getContext().getMetadata(), processingCommand);
        }
    }
    do {
        Command atomicCommand = nextCommand();
        if (shouldEvaluate) {
            needProcessing = prepareNextCommand(atomicCommand);
            nextCommand = null;
        } else {
            needProcessing = RelationalNodeUtil.shouldExecute(atomicCommand, true);
        }
        if (needProcessing) {
            registerRequest(atomicCommand);
        }
    // We use an upper limit here to the currency because these commands have potentially large in-memory value sets
    } while (!processCommandsIndividually() && hasNextCommand() && this.tupleSources.size() < Math.max(Math.min(MAX_CONCURRENT, this.getContext().getUserRequestSourceConcurrency()), this.getContext().getUserRequestSourceConcurrency() / 2));
}

Example 2 with SubqueryState

use of org.teiid.query.processor.relational.SubqueryAwareEvaluator.SubqueryState in project teiid by teiid.

the class AccessNode method closeDirect.

public void closeDirect() {
    if (reserved > 0) {
        getBufferManager().releaseBuffers(reserved);
        reserved = 0;
    }
    if (this.evaluatedPlans != null) {
        for (SubqueryState state : this.evaluatedPlans.values()) {
            state.close(true);
        }
        this.evaluatedPlans = null;
    }
    super.closeDirect();
    closeSources();
}